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count distinct combinations

518523Feb 15 2007 — edited Feb 16 2007
I have a table which has 3 columns a, b, c
there could be duplicates in a/b/c.
I want to count the total number of distinct combinations of a, b, c using a select query (i.e. the result of the select query should be the count). How do I do this?
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Locked on Mar 16 2007
Added on Feb 15 2007
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